/// <summary>
/// Called when the <c>DataContext</c> property of the <c>TargetView</c> has changed.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
#pragma warning disable AvoidAsyncVoid // Avoid async void
public override async void OnTargetViewDataContextChanged(object sender, Catel.MVVM.Views.DataContextChangedEventArgs e)
#pragma warning restore AvoidAsyncVoid // Avoid async void
{
if (IsCurrentDataContext(e))
{
return;
}
if (!IsTargetViewLoaded && !IsLoading)
{
return;
}
// Fix in WinRT to make sure inner grid is created
CreateViewModelWrapper();
// Fix for CTL-307: DataContextChanged is invoked before Unloaded because Parent is set to null
var targetControlParent = TargetView.GetParent();
if (targetControlParent is null)
{
return;
}
base.OnTargetViewDataContextChanged(sender, e);
var dataContext = GetDataContext(TargetView);
if (dataContext.IsSentinelBindingObject())
{
return;
}
if (!IsUnloading)
{
// Note: don't respect view model lifetime management here, the IViewModelFactory should return null if
// no vm should be created and users *really* want to disable this kind of core Catel behavior
await UpdateDataContextToUseViewModelAsync(dataContext);
}
}
/// <summary>
/// Called when the <c>DataContext</c> property of the <c>TargetView</c> has changed.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
#pragma warning disable AvoidAsyncVoid // Avoid async void
public override async void OnTargetViewDataContextChanged(object sender, Catel.MVVM.Views.DataContextChangedEventArgs e)
#pragma warning restore AvoidAsyncVoid // Avoid async void
{
if (IsCurrentDataContext(e))
{
return;
}
if (!IsTargetViewLoaded && !IsLoading)
{
return;
}
// Fix in WinRT to make sure inner grid is created
CreateViewModelWrapper();
// Fix for CTL-307: DataContextChanged is invoked before Unloaded because Parent is set to null
var targetControlParent = TargetView.GetParent();
if (targetControlParent == null)
{
return;
}
base.OnTargetViewDataContextChanged(sender, e);
var dataContext = TargetView.DataContext;
if (dataContext.IsSentinelBindingObject())
{
return;
}
if (!IsUnloading)
{
await UpdateDataContextToUseViewModelAsync(dataContext);
}
}
/// <summary>
/// Called when the <c>DataContext</c> property of the <c>TargetView</c> has changed.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
public override void OnTargetViewDataContextChanged(object sender, Catel.MVVM.Views.DataContextChangedEventArgs e)
{
if (e.AreEqual)
{
return;
}
if (!IsTargetViewLoaded && !IsLoading)
{
return;
}
// Fix in WinRT to make sure inner grid is created
CreateViewModelWrapper();
// Fix for CTL-307: DataContextChanged is invoked before Unloaded because Parent is set to null
var targetControlParent = TargetView.GetParent();
if (targetControlParent == null)
{
return;
}
base.OnTargetViewDataContextChanged(sender, e);
var dataContext = TargetView.DataContext;
if (dataContext.IsSentinelBindingObject())
{
return;
}
if (!IsUnloading)
{
UpdateDataContextToUseViewModel(dataContext);
}
}